Carrec An Ti, located near Saint-Malo, France, is a marine site suitable for beginners. The site maintains a consistent depth of approximately 10 metres. Water temperatures fluctuate between 11C and 16C throughout the year, requiring appropriate thermal protection to mitigate the risk of hypothermia. While specific observations at this exact location are limited, species recorded around this area include various crustaceans such as crabs, squat lobsters, and spiny spider crabs, as well as wrasses, conger eels, and sea slugs. Soft corals and brittle stars are also present in the surrounding waters. The site is accessible for both diving and snorkelling activities.

Les Arches is a reef site located 1500 metres off the coast of Saint-Malo, France. This site is suited for intermediate divers and requires boat access. The topography is consistent, with an average depth of 11 metres. Divers should be prepared for moderate currents and surge conditions, and remain vigilant for boat traffic in the area. Typical dives at this location last approximately 45 minutes. Water temperatures fluctuate throughout the year, ranging from 11C in the spring to 16C in August.

Pointe De Primel is a reef site located in Saint-Malo, France, offering shore access for divers. The site features an average depth of 9 metres, with a recorded range between 9 and 10 metres. Conditions at this location are variable, with visibility ranging from 1 to 15 metres and water temperatures fluctuating between 11C and 16C throughout the year. Divers should be aware of potential hazards including surf and strong currents. The site is suitable for beginners and provides facilities such as changing rooms and equipment rental for those visiting the area.

Phare des Triagoz is an offshore site located 12 kilometres from the coast near Trebeurden. The topography features a combination of reef, wall, and kelp forest structures. Divers can expect depths ranging from 20 to 40 metres, with an average depth of 25 metres. Visibility typically spans 5 to 10 metres. Water temperatures remain cool throughout the year, fluctuating between 10 and 13 degrees Celsius, necessitating a drysuit or thick wetsuit. The site is subject to moderate currents that can strengthen, making it essential to plan dives around slack water. Boat access is required, and local charter operators provide guided tours, equipment rental, and air fills.

Le Diben is a shore-entry reef dive located in the Baie de Morlaix. The site features a reef structure ranging from 10 to 20 metres in depth, making it suitable for beginner divers. Visibility typically fluctuates between 5 and 15 metres. Divers should expect moderate currents and plan entries and exits according to tidal movements. Water temperatures remain cool, between 11 and 14 degrees Celsius, necessitating appropriate thermal protection. Due to the presence of vessel traffic, the use of a surface marker buoy is essential at all times to ensure visibility. On-site facilities include showers and toilets for post-dive use.

Île Molène near Trébeurden is a reef site accessible only by boat. The location is suited for advanced divers due to the presence of strong currents. Water temperatures range from 10C in March to 17C in August and September. Species recorded around this area include European common cuttlefish, wrasses, tompot blenny, soft coral, various crab species, cod, sea stars, spirograph, snails, sea squirts, and shanny. Facilities available in the region include dive shops providing air fills, equipment rental, and guided tours. The site is also rated for snorkelling.

Fourche Noire is a reef and wall dive site located off the coast of Saint-Malo, France. The site features a consistent depth of approximately 9 metres, making it suitable for beginner divers. Access to the site is by boat only. Divers should be prepared for moderate currents and variable visibility ranging from 3 to 10 metres. Water temperatures fluctuate throughout the year, reaching a high of 17C in August and a low of 11C during the winter months. Hazards at this location include sea urchins, surf, and strong currents. Typical dives at this site last around 45 minutes.

Molaine is a marine dive site located off the coast of Saint-Malo, France. The site features a consistent depth of 10 metres. Water temperatures in this area fluctuate throughout the year, ranging from 10C in March to 16C during the peak months of August and September. Due to the variable nature of the local marine environment, conditions at this site can change. It is suitable for divers looking for a shallow, consistent depth profile in the Brittany and Normandy region.